Casing-clamping wrench.



UNITED STATES Patented August 23, 1904.

PATENT OFFICE.

CAslNe-CLAMPING. WRENCH.

SPECIFICATION forming part of Letters Patent N0. 768,500, dated August23, 19051.

Application filed July 18, 1903'.

To all whom t may concern:

Be itknown that LJOSIAH Gr. WINGER, a citi- Zen of the United States,and a resident of Grand Valley, in the county of Warren and State ofPennsylvania, have invented new and useful Improvements in Casing-Clamping Wrenches, of which the following is a full, clear, and exactdescription. Y

My invention relates 'to certain novel and useful improvements in casingWrenches and clamps, and has particular application to a device of thetype referred to for use in setting or screwing and unscrewingWell-casings.

In carrying out the present invention I have particularly in view as anobject the provision oi' a clamp which will securely engage with theexterior surface of the casingtube and may be used as a wrench to turnthe same, the construction of my device being such that the tube willnot be bent or crushed under the influence of pressure exerted thereon.l

A further object of my invention is to provide a combined clamp andwrench which may be adjusted to suit varying sizes of tubes or casings,the members of said device being provided with serrated or toothed diesor blocks or theirequivalents which will positively engage with thesides of the tubing and prevent the latter from slipping or turning inthe tool when the latter is employed for the purpose of screwing orunscrewing the casing.

A further object of my invention is to provide an improvedl device whichshall embody the essential features of durability, simplicity,positiveness of operation, and inexpensiveness.

With the above-recited objects and others of a similar nature in view myinvention consists in the construction, combination, and arrangement ofparts, as is described in this specification, delineated in theaccompanying drawings, and set forth in the appended claims.

Reference is to be had to the accompanying drawings, `forming a part ofthis speciiication, in which similar characters of reference indicatecorresponding parts in both the iigures.

' Figure 1 is a view in side elevation, showing my improved implementapplied to a wellcasing; and Fig. 2 is a top plan view showing theimplement and the manner in which it enf signed to seat.

Serial No. 166,077. (No model.)

gages with the casing, said `casing being shown in section.

Referring now to the accompanying draw-i ings in detail, A designatesone portion of thev casing, into which is designed'to be screwed orthreaded the second portion B. Theimplement or device which I havedesigned for this purpose comprises, essentially, twomembers,(designated as a whole by C and C',) each member having a handleportion, as at 5 and 5, at the inner end of which handle portions the'members-are formed with an approximately semicircular or curved portion6 and 6, that part of each curved member oppositethe point of juncturewith -the handle being yformed with a straight extension, as illustratedat 7 and 7 The members C and Cf are arranged substantially as shown inFig. Q--that'is to say, so that approximately a circle is formed by thesemicircular portions 6 and 6 of the arms or membersand said members areconnected together through the medium of cross-bars 8 8, rigidly.secured to the member 7, one of said bars lying on. either side of theupper portion of the handle 5 and being pivotally secured theretothrough the medium of a bolt 9, passing through one of the apertures 8in the bars 8 8 and through the handle, said bars being providedwith aplurality oil apertures 8, so that the members may be adjustablyconnected-that is to say, the distance between the membersk may be.increased or decreased as necessity occasions.

To the member C is pivoted, as at 10, a locking member 11, having aslot`formed centrally thereof, whereby the member 11 may slip or fitover the end portion. of the extension 7, and in order to lock themembers C and C securely in position a set-screw 12 is threaded in theend of the locking-bar 11 and is designed to bear against the side ofthe member 7. If desired, an aperture may be formed in the side memberof the extension 7, in which aperture the set-screw 12 is de- The curvedportions 6 and 6 of the arms or members C C are formed with groovesdesigned to seat serrated or Ytoothed bits or blocks, as shown at 13 13and 13 13, said blocks being held in position through the medium oi'screw-bolts 14 14 and 14 14.

IOO

From the above description, taken in connection with the accompanyingdrawings, the operation of the device will be readily apparent. Thelocking-barbeing disconnected, the arms are opened upon the bolt 9 as apivot and then closed or brought together to encircle the casing ortube. The locking-bar 1l is then moved upon its pivot and slipped overthe end of the extension 7" and securely tightened thereon through themedium of the setscrew l2. By turning the set-screw l2 the arms may bebrought as tightly as desirable about the cas-ing or tube, and thelatter may then be rotated by the handles and 5u.

It is to be noted that a device of this character is exceedingly simplein its construction, as there are no parts to be easily broken orderanged, and such a device entirely obviates the necessity of resortingto the method commonly employed for screwing or unscrewing thecasing-tubes-that is to say, it has been the custom to assemble and takeapart the casing through the medium of a twisterrope and wooden pole,the rope being wound about the easing and a loop being formed at one endof the rope, through which loop the pole was slipped, and by pulling orturning the pole the casing was screwed or unscrewed, as desired. Thismanner of connecting and disconnecting the tubes requires a large amountof time and is also very uncertain, as a rope or pole very often breaksunder the strain; but with my present device the sections of tubing maybe easily connected or disconnected without danger of breaking theimplement or crushing the tubing.

Having thus described my invention, 1 claim as new and desire to secureby Letters Patentl. A device of the class described, comprising memberseach having a curved portion, a transverse bar carried by one member andpivotally connected to a second member, said bar holding the membersspaced apart, and a locking-bar pivoted to one member and designed toengage with the opposite member.

2. A device of the class described, comprising a plurality of members,each member having a handle portion and a curved portion, a transversebar pivotally connecting the handle portion of one member with anextension formed at the curved portion of the opposite member andholding such melnbers spaced apart, and a device for locking the membersagainst movement.

3. A device of the class described, comprising aplurality of members,each member having a curved portion, and an extension formed at one endof each curved portion, a pivotal connection between said members, alocking device for securing the 'members against movement, and serrateddies or blocks upon the inner curved portions of the members and screwsfor securing said blocks, substantially as set forth.

4. A device of the class described, comprising` a plurality of members,a pivotal connection holding' the members spaced apart, each memberhaving an approximately semicircular portion, said portions beingadapted when the members are connected, to form a circularclamping-body, a locking-bar pivoted to one member and designed toengage with the opposite member, a set-screw carried by said bar forholding the members against movement, and dies or gripping-blockscarried by said members, substantially as set forth.

A device of the class described, comprising two members, means foradjustably and pivotally connecting` the members, a lockingbar pivotedto one member and adapted to engage with the opposite member, aset-screw threaded in the locking-bar and designed to bear against oneof the members for holding the parts against movement, dies orgrippingblocliscarried by said members and screws for retaining saidblocks in position, substantially as set forth.

1n testimony whereof l have signed my name to this specification in thepresence of two subscribing witnesses.

JOSlAH G. WTINGER.

Witness es:

GEO. C. Pnms'rnur, C. D. CRANDALL.

